/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:29:51,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:29:51,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:29:51,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:29:51,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:29:51,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:29:51,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:29:51,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:29:51,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:29:51,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:29:51,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:29:51,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:29:51,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:29:51,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:29:51,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:29:51,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:29:51,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:29:51,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:29:51,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:29:51,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:29:51,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:29:51,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:29:51,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:29:51,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:29:51,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:29:51,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:29:51,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:29:51,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:29:51,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:29:51,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:29:51,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:29:51,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:29:51,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:29:51,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:29:51,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:29:51,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:29:51,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:29:51,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:29:51,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:29:51,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:29:51,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:29:51,571 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 14:29:51,617 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:29:51,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:29:51,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:29:51,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:29:51,621 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:29:51,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:29:51,621 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:29:51,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:29:51,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:29:51,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:29:51,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:29:51,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:29:51,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:29:51,625 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:29:51,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:29:51,625 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:29:51,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:29:51,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:29:51,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:29:51,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:29:51,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:29:51,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:29:51,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:29:51,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:29:51,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:29:51,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:29:51,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:29:51,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:29:51,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:29:51,629 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:29:52,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:29:52,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:29:52,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:29:52,071 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:29:52,072 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:29:52,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-10-28 14:29:52,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/607e2f01d/2ba93888ce5643239f528f3f7d65aa57/FLAG275c461e0 [2020-10-28 14:29:52,915 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:29:52,916 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-10-28 14:29:52,936 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/607e2f01d/2ba93888ce5643239f528f3f7d65aa57/FLAG275c461e0 [2020-10-28 14:29:53,150 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/607e2f01d/2ba93888ce5643239f528f3f7d65aa57 [2020-10-28 14:29:53,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:29:53,164 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:29:53,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:29:53,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:29:53,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:29:53,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:29:53" (1/1) ... [2020-10-28 14:29:53,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4823a914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:53, skipping insertion in model container [2020-10-28 14:29:53,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:29:53" (1/1) ... [2020-10-28 14:29:53,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:29:53,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:29:53,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:29:53,572 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:29:53,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:29:53,724 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:29:53,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:53 WrapperNode [2020-10-28 14:29:53,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:29:53,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:29:53,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:29:53,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:29:53,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:53" (1/1) ... [2020-10-28 14:29:53,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:53" (1/1) ... [2020-10-28 14:29:53,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:53" (1/1) ... [2020-10-28 14:29:53,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:53" (1/1) ... [2020-10-28 14:29:53,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:53" (1/1) ... [2020-10-28 14:29:53,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:53" (1/1) ... [2020-10-28 14:29:53,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:53" (1/1) ... [2020-10-28 14:29:53,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:29:53,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:29:53,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:29:53,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:29:53,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:29:53,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:29:53,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:29:53,905 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:29:53,906 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:29:53,906 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 14:29:53,907 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 14:29:53,907 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 14:29:53,907 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 14:29:53,907 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 14:29:53,908 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 14:29:53,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 14:29:53,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 14:29:53,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 14:29:53,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 14:29:53,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 14:29:53,910 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 14:29:53,910 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 14:29:53,911 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 14:29:53,911 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 14:29:53,911 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 14:29:53,911 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 14:29:53,912 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 14:29:53,912 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 14:29:53,912 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 14:29:53,912 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 14:29:53,912 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 14:29:53,913 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 14:29:53,913 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 14:29:53,913 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 14:29:53,913 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 14:29:53,914 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 14:29:53,914 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 14:29:53,914 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 14:29:53,914 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:29:53,915 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 14:29:53,915 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 14:29:53,915 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 14:29:53,915 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 14:29:53,916 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 14:29:53,916 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 14:29:53,916 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 14:29:53,916 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 14:29:53,916 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 14:29:53,916 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 14:29:53,917 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 14:29:53,917 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 14:29:53,917 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 14:29:53,917 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 14:29:53,917 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 14:29:53,917 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 14:29:53,918 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 14:29:53,918 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 14:29:53,918 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 14:29:53,919 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 14:29:53,919 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:29:53,920 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:29:53,920 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:29:53,920 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:29:53,920 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-28 14:29:53,921 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 14:29:53,921 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:29:53,921 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 14:29:53,921 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-28 14:29:53,921 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:29:53,921 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 14:29:53,921 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-28 14:29:53,922 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 14:29:53,922 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:29:53,922 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-28 14:29:53,922 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 14:29:53,923 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 14:29:53,923 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 14:29:53,925 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 14:29:53,925 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 14:29:53,925 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 14:29:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 14:29:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 14:29:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 14:29:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 14:29:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 14:29:53,926 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 14:29:53,927 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 14:29:53,927 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 14:29:53,928 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 14:29:53,928 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 14:29:53,928 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 14:29:53,928 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 14:29:53,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 14:29:53,929 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 14:29:53,929 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 14:29:53,929 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 14:29:53,929 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 14:29:53,929 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 14:29:53,929 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 14:29:53,929 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 14:29:53,930 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 14:29:53,930 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 14:29:53,930 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 14:29:53,930 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 14:29:53,930 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 14:29:53,930 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 14:29:53,930 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 14:29:53,930 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 14:29:53,931 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 14:29:53,931 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 14:29:53,931 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-28 14:29:53,931 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 14:29:53,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:29:53,931 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:29:53,931 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:29:53,932 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:29:53,932 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:29:53,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:29:53,932 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:29:53,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 14:29:53,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:29:53,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:29:53,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:29:53,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:29:53,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:29:53,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:29:53,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:29:53,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:29:54,635 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:29:54,636 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-10-28 14:29:54,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:29:54 BoogieIcfgContainer [2020-10-28 14:29:54,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:29:54,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:29:54,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:29:54,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:29:54,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:29:53" (1/3) ... [2020-10-28 14:29:54,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d6a7a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:29:54, skipping insertion in model container [2020-10-28 14:29:54,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:29:53" (2/3) ... [2020-10-28 14:29:54,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d6a7a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:29:54, skipping insertion in model container [2020-10-28 14:29:54,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:29:54" (3/3) ... [2020-10-28 14:29:54,656 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2020-10-28 14:29:54,670 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:29:54,677 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:29:54,692 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:29:54,742 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:29:54,743 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:29:54,743 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:29:54,743 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:29:54,748 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:29:54,748 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:29:54,748 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:29:54,748 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:29:54,781 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2020-10-28 14:29:54,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-28 14:29:54,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:29:54,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:29:54,794 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:29:54,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:29:54,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1889217750, now seen corresponding path program 1 times [2020-10-28 14:29:54,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:29:54,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1430990758] [2020-10-28 14:29:54,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:29:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:29:55,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:55,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:55,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:29:55,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:29:55,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:29:55,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-10-28 14:29:55,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:29:55,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:29:55,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:29:55,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:29:55,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:29:55,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:29:55,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:29:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:29:55,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:55,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:29:55,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:29:55,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:29:55,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 14:29:55,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:29:55,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:29:55,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:29:55,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:29:55,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:29:55,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:29:55,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:29:55,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1430990758] [2020-10-28 14:29:55,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:29:55,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 14:29:55,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764941848] [2020-10-28 14:29:55,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 14:29:55,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:29:55,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 14:29:55,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 14:29:55,648 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 3 states. [2020-10-28 14:29:55,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:29:55,880 INFO L93 Difference]: Finished difference Result 114 states and 193 transitions. [2020-10-28 14:29:55,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:29:55,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-28 14:29:55,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:29:55,892 INFO L225 Difference]: With dead ends: 114 [2020-10-28 14:29:55,892 INFO L226 Difference]: Without dead ends: 51 [2020-10-28 14:29:55,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 14:29:55,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-28 14:29:55,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-28 14:29:55,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-28 14:29:55,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2020-10-28 14:29:55,946 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 12 [2020-10-28 14:29:55,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:29:55,947 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2020-10-28 14:29:55,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 14:29:55,947 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2020-10-28 14:29:55,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-28 14:29:55,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:29:55,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:29:55,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:29:55,949 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:29:55,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:29:55,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1773087040, now seen corresponding path program 1 times [2020-10-28 14:29:55,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:29:55,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754569405] [2020-10-28 14:29:55,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:29:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:29:55,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:56,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:56,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:29:56,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-28 14:29:56,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:29:56,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-28 14:29:56,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:29:56,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:29:56,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:29:56,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:29:56,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 14:29:56,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:29:56,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:29:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:29:56,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:56,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:29:56,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:29:56,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:29:56,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 14:29:56,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:29:56,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:29:56,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:29:56,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:29:56,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:29:56,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:29:56,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:29:56,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754569405] [2020-10-28 14:29:56,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:29:56,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:29:56,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872853468] [2020-10-28 14:29:56,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:29:56,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:29:56,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:29:56,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:29:56,217 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand 5 states. [2020-10-28 14:29:56,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:29:56,468 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2020-10-28 14:29:56,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:29:56,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-28 14:29:56,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:29:56,470 INFO L225 Difference]: With dead ends: 83 [2020-10-28 14:29:56,470 INFO L226 Difference]: Without dead ends: 79 [2020-10-28 14:29:56,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:29:56,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-28 14:29:56,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 50. [2020-10-28 14:29:56,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-28 14:29:56,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2020-10-28 14:29:56,484 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 13 [2020-10-28 14:29:56,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:29:56,484 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2020-10-28 14:29:56,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:29:56,484 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2020-10-28 14:29:56,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 14:29:56,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:29:56,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:29:56,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:29:56,486 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:29:56,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:29:56,486 INFO L82 PathProgramCache]: Analyzing trace with hash -825144030, now seen corresponding path program 1 times [2020-10-28 14:29:56,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:29:56,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501304564] [2020-10-28 14:29:56,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:29:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:29:56,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:56,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:56,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:57,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:29:57,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 14:29:57,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:29:57,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 609 [2020-10-28 14:29:57,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:29:57,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:29:57,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:29:57,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:29:57,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 14:29:57,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:29:57,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:29:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:29:57,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:29:57,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:29:57,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:29:57,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:29:57,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:29:57,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:29:57,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:29:57,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:29:57,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:29:57,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:29:57,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:29:57,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:29:57,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501304564] [2020-10-28 14:29:57,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:29:57,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:29:57,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863205527] [2020-10-28 14:29:57,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:29:57,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:29:57,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:29:57,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:29:57,181 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand 4 states. [2020-10-28 14:29:57,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:29:57,386 INFO L93 Difference]: Finished difference Result 99 states and 130 transitions. [2020-10-28 14:29:57,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:29:57,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-28 14:29:57,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:29:57,388 INFO L225 Difference]: With dead ends: 99 [2020-10-28 14:29:57,390 INFO L226 Difference]: Without dead ends: 55 [2020-10-28 14:29:57,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:29:57,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-28 14:29:57,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-10-28 14:29:57,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-28 14:29:57,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-10-28 14:29:57,412 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 23 [2020-10-28 14:29:57,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:29:57,412 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-10-28 14:29:57,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:29:57,412 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-10-28 14:29:57,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 14:29:57,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:29:57,414 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:29:57,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:29:57,414 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:29:57,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:29:57,415 INFO L82 PathProgramCache]: Analyzing trace with hash -911494601, now seen corresponding path program 1 times [2020-10-28 14:29:57,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:29:57,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918845087] [2020-10-28 14:29:57,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:29:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-28 14:29:57,455 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-28 14:29:57,455 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-28 14:29:57,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:29:57,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:29:57 BoogieIcfgContainer [2020-10-28 14:29:57,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:29:57,496 INFO L168 Benchmark]: Toolchain (without parser) took 4336.49 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 124.2 MB in the beginning and 71.6 MB in the end (delta: 52.7 MB). Peak memory consumption was 84.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:29:57,497 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:29:57,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 556.61 ms. Allocated memory is still 151.0 MB. Free memory was 123.5 MB in the beginning and 101.0 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:29:57,499 INFO L168 Benchmark]: Boogie Preprocessor took 71.89 ms. Allocated memory is still 151.0 MB. Free memory was 101.0 MB in the beginning and 97.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:29:57,500 INFO L168 Benchmark]: RCFGBuilder took 839.04 ms. Allocated memory is still 151.0 MB. Free memory was 97.9 MB in the beginning and 83.8 MB in the end (delta: 14.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-28 14:29:57,501 INFO L168 Benchmark]: TraceAbstraction took 2853.41 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 83.8 MB in the beginning and 71.6 MB in the end (delta: 12.2 MB). Peak memory consumption was 42.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:29:57,504 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 556.61 ms. Allocated memory is still 151.0 MB. Free memory was 123.5 MB in the beginning and 101.0 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 71.89 ms. Allocated memory is still 151.0 MB. Free memory was 101.0 MB in the beginning and 97.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 839.04 ms. Allocated memory is still 151.0 MB. Free memory was 97.9 MB in the beginning and 83.8 MB in the end (delta: 14.1 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2853.41 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 83.8 MB in the beginning and 71.6 MB in the end (delta: 12.2 MB). Peak memory consumption was 42.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 985]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = ((void*)0) [L999] head->prev = ((void*)0) [L1000] head->data = 0 [L1002] SLL* x = head; [L1003] int marked = 0; [L1006] COND TRUE __VERIFIER_nondet_int() || !marked [L1009] x->next = malloc(sizeof(SLL)) [L1010] EXPR x->next [L1010] x->next->prev = x [L1011] EXPR x->next [L1011] x = x->next [L1012] x->next = ((void*)0) [L1014] COND TRUE __VERIFIER_nondet_int() [L1016] marked = 1 [L1019] COND TRUE \read(marked) [L1020] x->data = 1 [L1006] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1025] x = head [L1027] COND FALSE !(!(((void*)0) != x)) [L1028] marked = 0 [L1030] EXPR x->next [L1030] x->next != ((void*)0) && x->next->data == 0 [L1030] EXPR x->next [L1030] EXPR x->next->data [L1030] x->next != ((void*)0) && x->next->data == 0 [L1030] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1035] EXPR x->next [L1035] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1035] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1035] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1037] EXPR x->next [L1037] x = x->next [L1038] EXPR x->data [L1038] COND TRUE !(x->data != 1) [L1038] CALL reach_error() [L985] COND FALSE !(0) [L985] __assert_fail ("0", "dll-sorted-1.c", 16, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.7s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 173 SDtfs, 149 SDslu, 72 SDs, 0 SdLazy, 232 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 30 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 2241 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...